Fire-resistant resin composition, fire-resistant sheet, fire-resistant laminate, and battery

Abstract

A fire-resistant resin composition comprises an endothermic agent having a thermal decomposition onset temperature of 800° C. or lower and an amount of heat absorbed of 300 J/g or larger, and a resin, a content of the endothermic agent per 100 parts by mass of the resin being 10 to 10000 parts by mass.

1 . A fire-resistant resin composition comprising an endothermic agent having a thermal decomposition onset temperature of 800° C. or lower and an amount of heat absorbed of 300 J/g or larger, and a resin, a content of the endothermic agent per 100 parts by mass of the resin being 10 to 10000 parts by mass. 
     
     
         2 . The fire-resistant resin composition according to  claim 1 , wherein the content of the endothermic agent per 100 parts by mass of the resin is 10 to 1600 parts by mass. 
     
     
         3 . The fire-resistant resin composition according to  claim 1 , wherein an average particle size of the endothermic agent is 0.1 to 90 μm. 
     
     
         4 . The fire-resistant resin composition according to  claim 1 , wherein a melt flow rate of the resin is 1.0 g/10 min or more. 
     
     
         5 . The fire-resistant resin composition according to  claim 1 , wherein the endothermic agent is a metal hydroxide. 
     
     
         6 . The fire-resistant resin composition according to  claim 5 , wherein the metal hydroxide is one or more selected from the group consisting of aluminum hydroxide, magnesium hydroxide and calcium hydroxide. 
     
     
         7 . The fire-resistant resin composition according to  claim 1 , wherein the resin is a thermoplastic resin. 
     
     
         8 . The fire-resistant resin composition according to  claim 1 , wherein the endothermic agent has a thermal decomposition onset temperature of 500° C. or lower and an amount of heat absorbed of 500 J/g or larger. 
     
     
         9 . The fire-resistant resin composition according to  claim 1 , wherein the endothermic agent comprises two or more endothermic agents differing in thermal decomposition onset temperature from each other. 
     
     
         10 . The fire-resistant resin composition according to  claim 1 , further comprising an endothermic agent having a thermal decomposition onset temperature of higher than 800° C. 
     
     
         11 . The fire-resistant resin composition according to  claim 1 , for use in a battery. 
     
     
         12 . A fire-resistant sheet comprising a fire-resistant resin composition according to  claim 1 . 
     
     
         13 . A fire-resistant sheet comprising a fire-resistant resin composition comprising an endothermic agent and a resin, wherein an amount of heat absorbed under heating from 23° C. to 1000° C. being 120 J/g or larger, and a heat absorption onset temperature of the fire-resistant sheet being 800° C. or lower. 
     
     
         14 . The fire-resistant sheet according to  claim 12 , wherein a thickness is 5 to 10000 μm. 
     
     
         15 . A battery comprising a fire-resistant sheet according to  claim 12  and a battery cell, wherein the fire-resistant sheet is attached to the surface of the battery cell. 
     
     
         16 . The fire-resistant resin composition according to  claim 1 , wherein a content of the resin per 100 parts by mass of the endothermic agent is 1 to 20 parts by mass. 
     
     
         17 . The fire-resistant resin composition according to  claim 16 , wherein the endothermic agent is a hydrated metal compound. 
     
     
         18 . The fire-resistant resin composition according to  claim 16 , wherein a solubility parameter of the resin is 9 or more. 
     
     
         19 . The fire-resistant resin composition according to  claim 16 , wherein the resin is a thermoplastic resin. 
     
     
         20 . The fire-resistant resin composition according to  claim 16 , wherein the resin is at least one selected from the group consisting of polyvinyl acetal resin, polyvinyl alcohol resin, acrylic resin, and ethylene-vinyl acetate copolymer resin. 
     
     
         21 . The fire-resistant resin composition according to  claim 16 , wherein the endothermic agent is at least one selected from the group consisting of aluminum hydroxide, magnesium hydroxide, calcium sulfate dihydrate, and magnesium sulfate heptahydrate. 
     
     
         22 . The fire-resistant resin composition according to  claim 16 , further comprising a flame retardant. 
     
     
         23 . The fire-resistant resin composition according to  claim 22 , wherein the flame retardant is a phosphorus atom-containing compound. 
     
     
         24 . The fire-resistant resin composition according to  claim 16 , wherein the endothermic agent has a thermal decomposition onset temperature of 500° C. or lower and an amount of heat absorbed of 500 J/g or larger. 
     
     
         25 . A fire-resistant sheet comprising a fire-resistant resin composition according to  claim 16 . 
     
     
         26 . The fire-resistant sheet according to  claim 25  for use in a battery. 
     
     
         27 . The fire-resistant sheet according to  claim 25 , wherein a thickness is 2 to 1000 μm. 
     
     
         28 . A battery comprising a fire-resistant sheet according to  claim 25  and a battery cell, wherein the fire-resistant sheet is disposed on the surface of the battery cell. 
     
     
         29 . A fire-resistant laminate comprising a base material and a fire-resistant sheet according to  claim 25 , disposed on at least one side of the base material. 
     
     
         30 . The fire-resistant laminate according to  claim 29 , wherein the base material is a metal base material. 
     
     
         31 . The fire-resistant laminate according to  claim 29 , for use in a battery. 
     
     
         32 . A battery comprising a fire-resistant laminate according to  claim 29  and a battery cell, wherein the fire-resistant laminate is disposed on the surface of the battery cell. 
     
     
         33 . The battery according to  claim 32 , wherein the fire-resistant laminate is disposed on the surface of the battery cell such that the fire-resistant sheet and the base material are arranged in the presented order from the battery cell side.